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新疆越冬代马铃薯甲虫出土规律及其影响因子分析

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Keywords: 马铃薯甲虫,越冬,温度,湿度,空间分布

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Abstract:

为进一步揭示环境因子对马铃薯甲虫成虫越冬出土的影响,运用ArcGIS软件的空间分析工具,研究了越冬代成虫出土后的空间分布格局,同时比较了土壤温度、湿度对其出土规律的影响。结果显示,越冬代马铃薯甲虫成虫出土后主要聚集在刚出土的马铃薯苗上,拥挤度指标(m*/m)为1.83,呈聚集分布。2011、2012年乌鲁木齐市马铃薯甲虫出土的起点温度分别为10.6℃和13.0℃,而2011年察布查尔县起点温度为14.6℃,且逐日出土虫量与土壤温度呈线性正相关。5月降水量大的年份马铃薯甲虫出土较早。研究表明,土壤温、湿度是影响马铃薯甲虫越冬代成虫出土活动的重要因素。

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